Electronic grade diethyl carbonate rectifying tower

Abstract

The utility model provides an electronic grade diethyl carbonate rectifying tower which comprises a tower body and a skirt base, the tower body is arranged on the skirt base, the electronic grade diethyl carbonate rectifying tower further comprises a box body, a heat exchange coil pipe is fixedly arranged in the box body, one end of the heat exchange coil pipe is communicated with an inlet of the tower body, and a stirring mechanism is arranged in the box body. The stirring mechanism is arranged in the box body, so that hot fluid in the box body can be stirred, a push plate can be driven by the stirring mechanism to do transverse horizontal reciprocating motion in the box body under the driving of a motor, and a turning plate can do axial reciprocating swing at the top and the bottom of an inner cavity of the box body; therefore, the hot fluid in the box body can be fully stirred, so that the temperature of each part of the hot fluid is uniform, the heat utilization rate of the hot fluid in the box body is improved, and the condition of heat waste is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of diethyl carbonate processing, in particular to an electronic-grade diethyl carbonate distillation tower. Background Art

[0002] Diethyl carbonate is a dicarbonate of ethanol. It is a colorless, clear liquid at room temperature. It is mainly used as a solvent for cellulose nitrate, resins, and some drugs (such as erythromycin), and an intermediate in organic synthesis (such as phenobarbital and pyrethrin). It can also be used in the electrolyte of lithium batteries. A distillation tower is required in the production process of diethyl carbonate.

[0003] Announcement No. "CN220257197U" provides a distillation tower for the production of diethyl carbonate, including a bottom plate and a skirt, a distillation tower body is welded on the top of the skirt, a connecting device is installed on the outer wall of the distillation tower body, and a production device is installed inside the distillation tower body. The output shaft of the motor can drive the first pulley to rotate. The device can clean the impurities on the tower plate by using a cleaning brush roller, and at the same time inject cleaning liquid through the reflux pipe, use the cleaning liquid to flush the cleaned impurities, and discharge the sewage from the discharge pipe. This not only reduces the investment cost and reduces the burden on the enterprise, but also has only two motors, and the subsequent maintenance costs are relatively low, so the overall use effect is better;

[0004] However, the prior art still has the following defects:

[0005] Diethyl carbonate needs to be kept at a high temperature when entering the distillation tower. However, in the prior art, the temperature of diethyl carbonate will drop to a certain extent when it is transported in the pipeline. Therefore, diethyl carbonate is often heated again by heat exchange equipment before distillation. The heat utilization rate of the heat exchange equipment closer to the heat exchange coil is high, but the utilization rate of the heat farther away is low, resulting in heat waste. Utility Model Content

[0006] The utility model aims to provide an electronic grade diethyl carbonate distillation tower to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An electronic grade diethyl carbonate distillation tower comprises a tower body and a skirt, wherein the tower body is arranged on the skirt, and further comprises a box body, a heat exchange coil is fixedly arranged inside the box body, one end of the heat exchange coil is connected to the inlet of the tower body, and a stirring mechanism is arranged inside the box body;

[0009] The stirring mechanism includes a cross bar, a threaded rod, a traction member and a push plate. The cross bar is fixed to the inner wall of the box body. The two threaded rods are rotatably arranged between the cross bar and the box body, and one end of the two threaded rods passes through the cross bar and are connected to each other. The traction member is arranged between the cross bar and the threaded rod. The push plate is vertically fixed on the traction member. A flap is also rotatably arranged inside the box body. The flap is connected to the push plate through a driving member. The threaded rod is driven by a motor installed at the bottom of the box body.

[0010] Preferably, the traction member includes a traction seat, a connecting seat, a connecting arm and a slider, the connecting seat is respectively fixed to the surfaces of the slider and the traction seat, the traction seat is threadedly connected to the surface of the threaded rod, the slider is slidably arranged on the cross bar, the two ends of the connecting arm are respectively hinged to the surfaces of the two connecting seats, and the push plate is vertically fixed to the side of the slider.

[0011] Preferably, a slide groove is provided at the bottom of the slider, a track is provided on the cross bar, and the slider is slidably arranged on the track through the slide groove and is vertically limited by a limiting member.

[0012] Preferably, the limiting member comprises a limiting groove and a limiting protrusion, the limiting protrusion is arranged on the inner wall of the sliding groove, the limiting groove is arranged on the side wall of the track, and the limiting protrusion is slidably arranged in the limiting groove.

[0013] Preferably, the driving member includes a spherical protrusion fixedly arranged on the surface of the push plate, and a guide groove arranged on the flap, and the spherical protrusion is slidably arranged in the guide groove.

[0014] Preferably, the guide groove is distributed on the surface of the flap in a spiral structure, and the projection of the guide groove on the cross section of the flap is an arc with a central angle of °.

[0015] Preferably, the box body is provided with an air inlet pipe and an exhaust pipe, and the bottom of the box body is welded with legs for supporting the whole body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can stir the hot fluid in the box body by arranging a stirring mechanism inside the box body, and the stirring mechanism can drive the push plate to perform horizontal reciprocating motion inside the box body under the drive of the motor, and the flap can perform axial reciprocating swing at the top and bottom of the inner cavity of the box body, so that the hot fluid inside the box body can be fully stirred, so that the temperature of each part of the hot fluid is uniform, thereby improving the heat utilization rate of the hot fluid inside the box body and preventing heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the box of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the stirring mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the slider and the crossbar of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection structure of the flap and the push plate of the utility model.

[0023] In the figure: 1. tower body; 2. skirt; 3. box body; 4. heat exchange coil; 5. cross bar; 6. threaded rod; 7. push plate; 8. flap; 9. traction seat; 10. connecting seat; 11. connecting arm; 12. slider; 13. slide groove; 14. track; 15. limit groove; 16. limit protrusion; 17. spherical protrusion; 18. guide groove; 19. intake pipe; 20. exhaust pipe; 21. support leg. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] An electronic grade diethyl carbonate rectification tower comprises a tower body 1 and a skirt 2, wherein the tower body 1 is arranged on the skirt 2, and further comprises a box body 3, wherein a heat exchange coil 4 is fixedly arranged inside the box body 3, and one end of the heat exchange coil 4 is connected to the inlet of the tower body 1, and a stirring mechanism is arranged inside the box body 3, and an air inlet pipe 19 and an exhaust pipe 20 are arranged on the box body 3, and a support leg 21 for supporting the whole is welded to the bottom of the box body 3;

[0027] The stirring mechanism includes a cross bar 5, a threaded rod 6, a traction member and a push plate 7. The cross bar 5 is fixed to the inner wall of the box body 3. The two threaded rods 6 are rotatably arranged between the cross bar 5 and the box body 3, and one end of the two threaded rods 6 passes through the cross bar 5 and are connected to each other. The traction member is arranged between the cross bar 5 and the threaded rod 6. The push plate 7 is vertically fixed on the traction member. The threaded rod 6 is driven by a motor installed at the bottom of the box body 3. The traction member includes a traction seat 9, a connecting seat 10, a connecting arm 11 and a slider 12. The connecting seat 10 is respectively fixed to the surfaces of the slider 12 and the traction seat 9. The traction seat 9 is threadedly connected to the surface of the threaded rod 6. The slider 12 is slidably arranged on the cross bar 5. The two ends of the connecting arm 11 are respectively hinged to the surfaces of the two connecting seats 10, and the push plate 7 is vertically fixed to the side of the slider 12.

[0028] See also Figure 2 and 3 When the threaded rod 6 rotates, it can drive the traction seat 9 to move linearly on its surface. When the traction seat 9 moves, it can pull the slider 12 to slide on the surface of the cross bar 5 through the connecting seat 10 and the connecting arm 11, and then drive the push plate 7 to move synchronously through the cross bar 5, so as to realize the stirring of the fluid inside the box 3 by the push plate 7.

[0029] A slide groove 13 is provided at the bottom of the slider 12, and a track 14 is provided on the cross bar 5. The slider 12 is slidably set on the track 14 through the slide groove 13 and is vertically limited by a limiting member. The limiting member includes a limiting groove 15 and a limiting protrusion 16. The limiting protrusion 16 is set on the inner wall of the slide groove 13, the limiting groove 15 is set on the side wall of the track 14, and the limiting protrusion 16 is slidably set in the limiting groove 15.

[0030] See also Figure 4 When moving, the slider 12 can slide on the surface of the track 14 through the slide groove 13, and the slider 12 can drive the limiting protrusion 16 to move synchronously inside the limiting groove 15. The cooperation between the limiting protrusion 16 and the limiting groove 15 can achieve vertical limiting of the slider 12 to prevent the slider 12 from falling off the surface of the track 14.

[0031] Embodiment 2:

[0032] The above scheme realizes the stirring of the hot fluid inside the box body 3 by the horizontally reciprocating push plate 7, but there is still fluid at the top and bottom of the inner cavity of the box body 3 that cannot be stirred. Therefore, in this embodiment, a flap 8 is also rotatably arranged inside the box body 3, and the flap 8 is connected to the push plate 7 through a driving member. The driving member includes a spherical protrusion 17 fixedly arranged on the surface of the push plate 7, and a guide groove 18 arranged on the flap 8. The spherical protrusion 17 is slidably arranged in the guide groove 18. The guide groove 18 is distributed on the surface of the flap 8 in a spiral structure, and the projection of the guide groove 18 on the cross section of the flap 8 is an arc with a central angle of 90°.

[0033] See also Figure 3 and 5 When the push plate 7 moves horizontally back and forth, it can drive the spherical protrusion 17 to move synchronously. When the spherical protrusion 17 moves, it can drive the flap 8 to rotate through the guide groove 18. When the push plate 7 is reset, the cooperation of the spherical protrusion 17 and the guide groove 18 can also drive the flap 8 to reset, thereby stirring the fluid at the top and bottom of the inner cavity of the box body 3.

[0034] Working principle: When in use, diethyl carbonate is introduced into the heat exchange coil 4, and then the heat exchange medium is introduced into the box body 3 through the air inlet pipe 19, and then the motor is started. The motor can drive the threaded rod 6 to rotate. When the threaded rod 6 rotates, it can drive the traction seat 9 to move linearly on its surface. When the traction seat 9 moves, it can pull the slider 12 to slide on the surface of the cross bar 5 through the connecting seat 10 and the connecting arm 11, and then drive the push plate 7 to move synchronously through the cross bar 5. When the push plate 7 moves, it can drive the spherical protrusion 17 to move synchronously. When the spherical protrusion 17 moves, it can drive the flap 8 to rotate through the guide groove 18. The cooperation of the push plate 7 and the flap 8 can achieve uniform stirring of the hot fluid inside the box body 3, thereby improving the heat exchange efficiency and the heat utilization rate.

[0035] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electronic grade diethyl carbonate distillation tower, comprising a tower body (1) and a skirt (2), wherein the tower body (1) is arranged on the skirt (2), and is characterized in that: It also comprises a box body (3), a heat exchange coil (4) is fixedly arranged inside the box body (3), one end of the heat exchange coil (4) is connected to the inlet of the tower body (1), and a stirring mechanism is arranged inside the box body (3); The stirring mechanism comprises a cross bar (5), a threaded rod (6), a traction member and a push plate (7); the cross bar (5) is fixed to the inner wall of the box body (3); the two threaded rods (6) are rotatably arranged between the cross bar (5) and the box body (3); one end of the two threaded rods (6) passes through the cross bar (5) and are connected to each other; the traction member is arranged between the cross bar (5) and the threaded rod (6); the push plate (7) is vertically fixed to the traction member; a flap (8) is rotatably arranged inside the box body (3); the flap (8) is connected to the push plate (7) through a driving member; and the threaded rod (6) is driven by a motor installed at the bottom of the box body (3).

2. An electronic grade diethyl carbonate distillation tower according to claim 1, characterized in that: The traction member comprises a traction seat (9), a connecting seat (10), a connecting arm (11) and a slider (12); the connecting seat (10) is respectively fixed to the surfaces of the slider (12) and the traction seat (9); the traction seat (9) is threadedly connected to the surface of the threaded rod (6); the slider (12) is slidably arranged on the cross bar (5); the two ends of the connecting arm (11) are respectively hinged to the surfaces of the two connecting seats (10); and the push plate (7) is vertically fixed to the side of the slider (12).

3. An electronic grade diethyl carbonate rectifying tower according to claim 2, characterized in that: A slide groove (13) is provided at the bottom of the slide block (12), a track (14) is provided on the cross bar (5), and the slide block (12) is slidably arranged on the track (14) through the slide groove (13) and is vertically limited by a limiting member.

4. An electronic grade diethyl carbonate distillation tower according to claim 3, characterized in that: The limiting member comprises a limiting groove (15) and a limiting protrusion (16); the limiting protrusion (16) is arranged on the inner wall of the slide groove (13); the limiting groove (15) is arranged on the side wall of the track (14); and the limiting protrusion (16) is slidably arranged in the limiting groove (15).

5. An electronic grade diethyl carbonate distillation tower according to claim 1, characterized in that: The driving member comprises a spherical protrusion (17) fixedly arranged on the surface of the push plate (7), and a guide groove (18) arranged on the flap (8), wherein the spherical protrusion (17) is slidably arranged in the guide groove (18).

6. An electronic grade diethyl carbonate distillation tower according to claim 5, characterized in that: The guide groove (18) is distributed on the surface of the flap (8) in a spiral structure, and the projection of the guide groove (18) on the cross section of the flap (8) is an arc with a central angle of 90°.

7. An electronic grade diethyl carbonate distillation tower according to claim 1, characterized in that: The box body (3) is provided with an air intake pipe (19) and an exhaust pipe (20), and a support leg (21) for supporting the whole is welded to the bottom of the box body (3).

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